Chip Mounter Side Light Apparatus for Accurate Edge Recognition
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Solution Overview
Problem
In chip mounters, existing side light arrangements face challenges in providing optimal lighting in narrow spaces, leading to incomplete recognition of parts with round or sphere edges due to limited space constraints and interference between side lights, resulting in inaccurate edge detection and mounting of ultra-small electronic components.
Innovation Solution
A side light apparatus with sloping portions and mirrors is designed to emit light at angles of 30 to 60 degrees, allowing light to reflect and reach parts picked up by nozzles, ensuring accurate edge recognition and positioning information, even in densely arranged spindle configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If side light sources are arranged directly in front of nozzles to illuminate parts, then lighting intensity is improved, but light interference between adjacent nozzles occurs and edge recognition accuracy deteriorates
Solution Approach 1:
The patent introduces reflective surfaces (sides of spindles or dedicated reflectors) as intermediaries to redirect light from front-facing sources to the side surfaces of parts. This mediator approach allows light to reach the target area indirectly, providing both sufficient illumination intensity and proper lighting angles for edge recognition without direct light interference between adjacent nozzles.
Solution Approach 2:
The patent transitions from one-dimensional direct front lighting to multi-dimensional indirect lighting by reflecting light at angles. Light sources positioned in front of nozzles are redirected via reflective surfaces to illuminate side surfaces of parts at optimal angles, adding a dimensional aspect to the lighting path that resolves the conflict between intensity and precision.
2Area of stationary object
If multiple side light sources are arranged to illuminate parts picked up by multiple nozzles, then coverage area is improved, but space requirements increase and device compactness deteriorates
Solution Approach 1:
The patent makes the spindles serve multiple functions: they not only hold and position nozzles for part pickup but also act as reflective surfaces for lighting. This multi-functionality allows the same structural elements to provide both mechanical support and optical functionality, expanding lighting coverage without adding separate dedicated lighting components that would increase device volume.
Solution Approach 2:
The patent merges the lighting function with the existing spindle structure by utilizing the sides of spindles as reflective surfaces. This consolidation combines the mechanical support function and the optical reflection function into a single integrated structure, achieving wide lighting coverage while maintaining compact device dimensions.
3Productivity
If spindles are arranged closely to increase nozzle density, then productivity is improved, but space for traditional side lighting arrangements is reduced and lighting quality deteriorates
Solution Approach 1:
The patent uses the spindle surfaces themselves as intermediary reflective elements to redirect light in tightly spaced configurations. This allows light to travel indirect paths between closely spaced nozzles, maintaining adequate illumination intensity and proper lighting angles even when spindles are arranged at minimal distances to maximize productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables accurate recognition of edge lines and position information of parts, improving the speed and accuracy of part mounting while allowing for a more compact and efficient chip mounter design, reducing the distance between spindles and enabling more nozzles in the same area.
Implementation Method 1
A side light apparatus with sloping portions and mirrors is designed to emit light at angles of 30 to 60 degrees, allowing light to reflect and reach parts picked up by nozzles
Data Source
AI summary
Provided are a light apparatus of a chip mounter which emits light to sides of a plurality of parts picked up by a plurality of nozzles of a chip mounter, the light apparatus including: at least one light module including a plurality of sloping portions each of which includes a plurality of slopes, wherein a slope of the plurality of slopes includes a light source emitting light to a side of a first part picked up by a first nozzle among the plurality of nozzles of the chip mounter.